JP3175486B2 - Seal material for weather strip - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing material for sealing between a weather strip and a portion to which the weather strip is to be attached, and more particularly to improvement of the releasability of a release sheet used for the sealing material. .

[0002]

2. Description of the Related Art As shown in FIGS. 8 and 9, a weather strip 40 is attached to a lower surface of a front edge of a bonnet 2 of an automobile 1, and a member 3 facing the bonnet 2 (a headlight, a front grill, an automobile body). Etc.). The weather strip 40 includes, for example, a plate-shaped mounting portion 41, a hollow seal portion 42 and a lower lip portion 43 that contact and seal the facing member 3, and an upper lip portion 44 that contacts and seals the bonnet 2. And each part is integrally extruded.

[0003] The weather strip 40 has a mounting portion 41.
Because the clip was simply fixed to the bonnet 2 by the well-known clip 45 inserted into the important point, a gap 46 was sometimes formed between the mounting portion 41 and the bonnet 2. However, even if there is this gap 46, the upper lip portion 44
Abuts against the hood 2 and seals it, so there is no immediate problem.

However, when the automobile 1 is running at a high speed, an upward suction force acts on the bonnet 2 due to the negative pressure, so that the seal between the upper lip portion 44 and the bonnet 2 becomes insufficient, and wind and rainwater pass through the gap 46. There was a risk of entering the engine room.

[0005]

Therefore, as shown in FIG. 10, by attaching a sealing material 50 on the upper surface of the mounting portion 41 of the weather strip 40, a gap 46 is formed between the mounting portion 41 and the bonnet 2. Sealing to prevent the occurrence of is considered. The sealing material 50 includes a sponge rubber substrate 51, a first adhesive tape 52 for bonding a weatherstrip adhered to the lower surface of the sponge rubber substrate 51, and a second adhesive tape adhered to the upper surface of the sponge rubber substrate 51. Tape 53 and release sheet 5 attached to second adhesive tape 53
And 4. The release sheet 54 is made of a sponge rubber substrate 51 so that it can be easily peeled off from the second adhesive tape 53.
The ear portion 54a protrudes from the end in the longitudinal direction. Then, the release sheet 54 is peeled off, and the second adhesive tape 53 is adhered to the bonnet 2 for use. When the sealing material 50 with the adhesive tape is used as described above, the clip 45 can be omitted, but may be used together.

However, the sealing material 50 under study has the following problems. That is, as shown in FIG. 11, when the release sheet 54 is pulled upward and peeled from the second adhesive tape 53, the longitudinal end of the sponge rubber substrate 51 is flexible and particularly easily stretched. 5
No. 4 extends the longitudinal end of the sponge rubber base material 51 upward while adhering to the end of the second adhesive tape 53. For this reason, the release sheet 54 is not easily peeled off, and the work efficiency is deteriorated. In addition, when the release sheet 54 is forcibly pulled, the longitudinal end of the sponge rubber base material 51 may be broken and a crack 55 may be generated. Was.

[0007] The above-mentioned problems of peeling workability and cracks become remarkable when a release sheet 54 having high adhesiveness to the second adhesive tape 53 is used. In other words, for example, at a portion having a corner or a step as shown in a portion C in FIG.
0 also has a three-dimensional shape instead of a straight line. Therefore, if a release sheet 54 having low adhesiveness to the second adhesive tape 53 is used, the release sheet 54 follows the three-dimensional shape. Therefore, it may not be attached to the second adhesive tape 53 and may be unexpectedly peeled off before it should be peeled off. To prevent this, a release sheet 54 having high adhesiveness to the second adhesive tape 53 may be used.
The problem of the peeling workability and the crack becomes more serious.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, to easily release a release sheet from an adhesive material, to improve work efficiency, and to prevent breakage of a flexible sealing substrate at the time of release. An object of the present invention is to provide a sealing material for the strip.

[0009]

In order to solve the above-mentioned problems, a sealing material for a weather strip according to the present invention comprises
Weather that seals between the trip and its mounting site
A sealing material for trips,
A long plate-shaped flexible sealing base material made of rubber or sponge resin, a first adhesive for bonding a weatherstrip attached to one surface of the flexible sealing base material, and the other surface of the flexible sealing base material between the second adhesive material is attached, and the second adhesive material and a release sheet which is affixed to, the second adhesive material and the release sheet in the longitudinal direction end portion of the flexible seal base in By interposing an edge anti-adhesion sheet
Before releasing the release sheet from the second adhesive.
Note that stretching and breaking of the longitudinal end of the flexible seal
As well as an anti-adhesive seal on the ears and edges of the release sheet.
Each of the above-mentioned soft parts so that the ears of the
Characterized by projecting from the longitudinal end of the soft seal base
And

Here , as the " first adhesive" and "second adhesive", a double-sided adhesive tape, an applied adhesive and the like can be exemplified. Examples of the “release sheet” include release paper, a resin sheet, and the like. The “longitudinal end of the flexible seal base” is, for example, 1 inward from the longitudinal edge of the flexible seal base.
ま で 50 mm, preferably 5-20 m
m.

It is preferable that the end- adhesion prevention sheet has low adhesion to the second adhesive .

[0012]

According to the sealing material for a weather strip of the present invention, particularly at the longitudinal end of the flexible sealing base material which is easily stretched,
Since the end adhesive preventing means for preventing the adhesion between the second adhesive material and the release sheet is provided, when the release sheet is pulled upward to be peeled off from the second adhesive tape, the release sheet is protected from the edge adhesive. Starting from the means, it is easily peeled off from the second adhesive tape, and the end of the flexible sealing substrate is not stretched upward. For this reason, the release sheet is easily peeled off, the working efficiency is improved, and there is no possibility that the end of the flexible seal base material is broken.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is embodied in a sealing material attached to the weather strip 40 for the bonnet 2 will be described below with reference to FIGS.

First, the sealing material 10 of the first embodiment shown in FIGS. 1 to 3 is provided with a long plate-shaped sponge rubber base material 11, and the base material 11 is, for example, an Nippon Denko Corp. product name, Eptsealer. Is used. A first adhesive tape 12 adhered to the mounting portion 41 of the weather strip 40 is attached to a lower surface of the sponge rubber substrate 11, and a second adhesive tape 13 is adhered to an upper surface of the sponge rubber substrate 11. The release sheet 1 having high adhesiveness to the second adhesive tape 13 is attached to the second adhesive tape 13 so that the second adhesive tape 13 can adhere to the three-dimensional shape of the weather strip 40 as shown in, for example, part C of FIG.
For example, a polyethylene resin sheet is used for the sheet 14.

The longitudinal end 11 of the sponge rubber substrate 11
a (for example, in the range of 10 to 20 mm from the longitudinal edge), between the second adhesive tape 13 and the release sheet 14, an end anti-adhesion sheet 15 for preventing adhesion between them is provided (the For the sheet 15, release paper having low adhesiveness to the second adhesive tape 13 is used as an example.

The release sheet 14 is also an end-adhesion prevention sheet 15
Also, as shown in FIG. 3, each of the sponge rubber base material 11 and the ear portion 14 are separated from the longitudinal edges of the sponge rubber base material 11 so that they are easily picked up with a finger and pulled upward to be easily separated from the second adhesive tape 13.
a and 15a are projected. The protruding length of the ears 14a and 15a is, for example, suitably 5 to 100 mm, and preferably 10 to 30 mm.

Then, the release sheet 14 and the end-adhesion prevention sheet 15 are peeled off from the second adhesive tape 13, and the second adhesive tape 13 is adhered to the bonnet 2 for use. When the sealing material 10 with the adhesive tape is used as described above, the clip 45 described in the section of the related art can be omitted, but may be used together.

According to the sealing material 10 of the first embodiment configured as described above, the sponge rubber substrate 1 which is particularly easily stretched
As shown in FIG. 3, when the release sheet 14 and the end anti-adhesive sheet 15 are separated from the second adhesive tape 13, the end anti-adhesion sheet 15 is provided at the end 11 a in the longitudinal direction. The mold sheet 14 is easily peeled from the second adhesive tape 13 with the inner edge of the end-adhesion prevention sheet 15 as a starting point, and the longitudinal end 11a of the sponge rubber base 11 is not stretched upward. For this reason, the release sheet 14 is easily peeled, the working efficiency is improved, and there is no possibility that the longitudinal end 11a of the sponge rubber substrate 11 is broken.

Next, the sealing material 20 of the second embodiment shown in FIGS.
1a (for example, in the range of 2 to 10 mm from the longitudinal edge) between the second adhesive tape 13 and the release sheet 14;
The only difference from the first embodiment is that a short end anti-adhesion sheet 15 is interposed (adhered to the second adhesive tape 13) and the ear 15a is eliminated. Therefore, the description of members common to the first embodiment will not be repeated.

According to the sealing material 20 of the second embodiment,
As shown in FIG. 5, the release sheet 14 is
When the release sheet 3 is peeled off, the release sheet 14 is easily peeled off from the second adhesive tape 13 with the inner edge of the end-adhesion prevention sheet 15 as a starting point, and the longitudinal end 11a of the sponge rubber base 11 is moved upward. Does not stretch. Therefore, the same effects as in the first embodiment can be obtained. In addition, the edge part anti-adhesion sheet 1
5 remains on the second adhesive tape 13, but since the sheet 15 is short, there is no problem in the adhesiveness to the bonnet 2.

Next, the sealing material 30 of the third embodiment shown in FIGS.
The second embodiment is different from the first embodiment only in that the second adhesive tape 13 in 1a (for example, in a range of 2 to 10 mm from the longitudinal edge) is partially omitted and the end anti-adhesion sheet 15 is omitted. Therefore, the description of members common to the first embodiment will not be repeated.

According to the sealing material 30 of the third embodiment,
As shown in FIG. 7, the release sheet 14 is
When the release sheet 3 is peeled off, the release sheet 14 is easily peeled off from the second adhesive tape 13 and the longitudinal end 11a of the sponge rubber base 11 is not stretched upward. Therefore,
The same effects as in the first embodiment can be obtained.

The present invention is not limited to the configuration of the above-described embodiment, but may be appropriately modified without departing from the spirit of the invention, for example, by being embodied in a sealing material for various weather strips other than the bonnet. It can also be embodied.

[0024]

As described above, the sealing material for a weather strip of the present invention is configured as described above, so that the release sheet can be easily peeled off from the adhesive material, the working efficiency can be improved, and the flexible sealing at the time of the peeling can be achieved. An excellent effect of preventing the destruction of the base material is provided.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a sealing material according to a first embodiment of the present invention is attached to a hood weather strip.

FIG. 2 is a front view of the sealing material attached to a release sheet.

FIG. 3 is a front view of the sealing material when a release sheet is peeled off.

FIG. 4 is a front view of a sealing material according to a second embodiment to which a release sheet is attached.

FIG. 5 is a front view of the sealing material when the release sheet is peeled off.

FIG. 6 is a front view of a sealing material according to a third embodiment to which a release sheet is attached.

FIG. 7 is a front view of the sealing material when the release sheet is peeled off.

FIG. 8 is a perspective view of a front portion of the automobile, showing a portion where a weather strip for a hood and a sealing material are used.

9 is a sectional view taken along line IX-IX in FIG.

FIG. 10 is a front view of a conventional sealing material to which a release sheet is attached.

FIG. 11 is a front view of the sealing material when the release sheet is peeled off.

[Explanation of symbols]

 10, 20, 30 Sealing material 11 Sponge rubber base material 11a Longitudinal end 12 First adhesive tape 13 Second adhesive tape 14 Release sheet 15 Edge anti-adhesive sheet 15a Ear

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-82583 (JP, A) JP-A 50-23354 (JP, U) JP-A 47-38063 (JP, U) JP-A 51- 107849 (JP, U) Actually open 52-144252 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60R 13/06 B62D 25/10 C09J 7/02 F16J 15/10

Claims (1)

(57) [Claims] (1)Weather strip (40) and its mounting
Seal for weatherstrip to seal between parts (2)
Material (10) Sponge rubber or sponge resin for the seal
Become Long plate-shaped flexible sealing substrate(11)And the flexible sea
Base material(11)Weather strip attached to one side of the
First adhesive for bonding(12)And the flexible sealing substrate
(11)Second adhesive adhered to the other side of the(13)
And the second adhesive material(13)Release sheet attached to
(14)The flexible sealing substrate(11)Longitudinal end of(11a)
The second adhesive material in(12)And the release sheet(1
4)WhenInterposition of the end anti-adhesive sheet (15)
With the above, the release sheet (14) is made to adhere to the second adhesive (1).
2) of the flexible sealing substrate (11) when peeled from
To prevent stretching and destruction of the longitudinal end (11a)
In the meantime, Ear part (14a) of the release sheet (14) and end adhesive prevention
It is easy to grasp the ears (15a) of the stop sheet (15) together.
The longitudinal direction of the flexible sealing base material (11)
Projecting from the opposite end (10a) Characterized by that
Seal material for the strip.